Github user rawataaryan9 commented on a diff in the pull request:
https://github.com/apache/spark/pull/18390#discussion_r124508707
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/evaluation/MulticlassClassificationEvaluator.scala
---
@@ -68,6 +84,7 @@ class MulticlassClassificationEvaluator @Since("1.5.0")
(@Since("1.5.0") overrid
def setLabelCol(value: String): this.type = set(labelCol, value)
setDefault(metricName -> "f1")
+ setDefault(labelValue -> -1.0)
--- End diff --
Removed as suggested
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